Precise pneumatic control method for voice coil motor
A technology of voice coil motor and air pressure control, applied in the direction of electric fluid pressure control, etc., can solve the problems of high cost, decay, poor performance, etc., and achieve the effect of low cost, easy implementation, and good long-term stability
Inactive Publication Date: 2015-05-20
HENAN XIRUI MEDICAL ELECTRONICS TECH
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Problems solved by technology
In this air pressure control application, there is a problem of poor performance in practical applications. The reason can be easily analyzed: due to the inherent deficiencies of open-loop control, environmental factors such as: changes in ambient temperature, changes in atmospheric pressure, these The influence of factors exists objectively and is nothing more than the degree of influence. To reduce its influence, a better environment needs to be constructed to satisfy it, but such a price is high and sometimes even impossible
In addition, no matter how good the performance of the component is, it will inevitably decay with time and environmental factors in the application, which is also the reason for the poor control effect.
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[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0017] Such as figure 1 Shown, the present invention comprises the steps:
[0018] Step 1, the system starts running;
[0019] Step 2, perform initialization; initialization establishes the necessary environment for system operation and is performed only once;
[0020] Step 3, collect the pressure value of the voice coil motor and perform pressure value scale conversion;
[0021] Step 4, compare the pressure value with the preset lower limit of the tolerance of the pressure value, and execute step 6 when the pressure value is less than the lower limit of the tolerance of the pressure value; execute step 5 when the pressure value is not less than the lower limit of the tolerance of the pressure value;
[0022] Step 5, compare the pressure value with the preset pressure value tolerance upper limit, when the pressure value > the preset pressure value to...
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The invention discloses a precise pneumatic control method for a voice coil motor. The method comprises the following steps: step 1, a system starts operating; step 2, initialization is carried out; step 3, the pressure value of the voice coil motor is collected and is subjected to scale conversion; step 4, the pressure value is compared with a preset pressure value allowance lower limit, if the pressure value is less than the pressure value allowance lower limit, the step 6 is carried out, or else, the step 5 is carried out; step 5, the pressure value is compared with the preset pressure value allowance upper limit, when the pressure value is more than the preset pressure value allowance upper limit, the step 6 is carried out, or else, the step 3 is carried out; step 6, a corresponding controlled quantity is obtained by using the pressure value after scale conversion to query controlled quantity pressure gauge, a corresponding controlled quantity 2 is obtained by setting the pressure query controlled quantity pressure gauge; the controlled quantity is set to be the result of the following formula: the current controlled quantity plus controlled quantity 2 minus controlled quantity 1, so that the pressure control on the voice coil motor is carried out. According to the precise pneumatic control method for the voice coil motor, the gauge-query type correction is carried out on the basis of closed loop control, and the precise control can be realized.
Description
technical field [0001] The invention relates to an air pressure control method, in particular to a precise air pressure control method for a voice coil motor. Background technique [0002] In the current air pressure control application, the voice coil motor is used to precisely control the air pressure, especially in the medical equipment industry. The voice coil motor precisely controls the gas pressure and directly outputs a control amount, which is extended by controlling the driving part of the voice coil motor. degree to open-loop implementation. In this air pressure control application, there is a problem of poor performance in practical applications. The reason can be easily analyzed: due to the inherent deficiencies of open-loop control, environmental factors such as: changes in ambient temperature, changes in atmospheric pressure, these The influence of factors exists objectively and is nothing more than the degree of influence, and to reduce its influence needs ...
Claims
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IPC IPC(8): G05D16/20
Inventor 葛苒崔婷婷王俊玲张鹏杰
Owner HENAN XIRUI MEDICAL ELECTRONICS TECH